set terminal postscript enhanced color
set output "temp.ps"
set key outside center bottom width 3 height 4 Left horizontal invert title "Trigonometric functions" noenhanced samplen 10 reverse spacing 2 box
set terminal postscript enhanced color
set output "temp.ps"
set key outside center bottom width 3 height 4 Left horizontal invert title "Trigonometric functions" noenhanced samplen 10 reverse spacing 2 box